R
Richard
- Jan 1, 1970
- 0
I'm building a comm device that'll be housed in a metal chassis and
rack-mounted. The question at-hand is whether the PCB ground should be
tied to the chassis or left floating.
Is there any benefit to tying the PCB ground to the chassis ground?
Conversely, are there drawbacks? From my reading, I'm not sure that
it'd reduce EMI emissions, and I'm concerned that it may expose Vss to
external interference. There doesn't seem to be a safety issue, but are
there certification mandates (e.g., UL)?
FYI, the incoming line power will be appropriately grounded to the
chassis for safety. And the metal shells of jacks (RJ-45) would be
grounded to the chassis, not Vss.
rack-mounted. The question at-hand is whether the PCB ground should be
tied to the chassis or left floating.
Is there any benefit to tying the PCB ground to the chassis ground?
Conversely, are there drawbacks? From my reading, I'm not sure that
it'd reduce EMI emissions, and I'm concerned that it may expose Vss to
external interference. There doesn't seem to be a safety issue, but are
there certification mandates (e.g., UL)?
FYI, the incoming line power will be appropriately grounded to the
chassis for safety. And the metal shells of jacks (RJ-45) would be
grounded to the chassis, not Vss.